Vivotek PT3112 User Manual page 19

The TCP protocol allows for less packet loss and produce a more accurate video
display. The downside with this protocol is that the real-time effect is worse than that
with the UDP protocol.
The HTTP protocol must be selected if the network is protected by a firewall and it
only allows HTTP Port (80) to be opened. In this mode, audio will not be sent and only
video is operational. If no special need is required, UDP protocol is recommended.
Generally speaking, the client's choice will be in the order of UDP → TCP → HTTP.
After the Network Camera is connected successfully, "Protocol Option" will indicate
the selected protocol. The selected protocol will be recorded in the user's PC and will
be used for the next connection. If the network environment is changed, or the user
wants to let the web browser to detect again, manually select the UDP protocol, save,
and return HOME to re-connect.
<url>
http://<Network Camera>/protocol.html
<Network Camera> is the domain name or the original IP address of the Network
Camera.
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